public MainPage() { InitializeComponent(); FileManip m = new FileManip(); IEnumerable<ShellTile> tilelist = ShellTile.ActiveTiles; m.Delete(tilelist); Data = Microsoft.Phone.Net.NetworkInformation.DeviceNetworkInformation.IsCellularDataEnabled; if (!Data) { MessageBox.Show("Data connection is not enabled. Kindly switch it on and comeback"); Dispatcher.BeginInvoke(() => btn_Search.IsEnabled=false); Dispatcher.BeginInvoke(() => btn_SearchR.IsEnabled=false); } }